220717157 has 2 divisors, whose sum is σ = 220717158. Its totient is φ = 220717156.

The previous prime is 220717121. The next prime is 220717163. The reversal of 220717157 is 751717022.

220717157 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 136095556 + 84621601 = 11666^2 + 9199^2 .

It is a cyclic number.

It is not a de Polignac number, because 220717157 - 2²⁴ = 203939941 is a prime.

It is equal to p_12159815 and since 220717157 and 12159815 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220717457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110358578 + 110358579.

It is an arithmetic number, because the mean of its divisors is an integer number (110358579).

Almost surely, 2^220717157 is an apocalyptic number.

It is an amenable number.

220717157 is a deficient number, since it is larger than the sum of its proper divisors (1).

220717157 is an equidigital number, since it uses as much as digits as its factorization.

220717157 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6860, while the sum is 32.

The square root of 220717157 is about 14856.5526620411. The cubic root of 220717157 is about 604.3363229692.

The spelling of 220717157 in words is "two hundred twenty million, seven hundred seventeen thousand, one hundred fifty-seven".